/*
 * Copyright (c) 2011, Nikolaus Moll
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the gradecalculator.net nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.gradecalculator.gui.qt.common.widgets;

import java.util.LinkedList;
import java.util.List;

import net.gradecalculator.core.interfaces.ICourseType;
import net.gradecalculator.core.util.CourseListUtil;

import com.trolltech.qt.gui.QWidget;

public class CourseTypeSelector extends MultiComboBox {
	
	private final List<ICourseType> courseTypes;
	
	public CourseTypeSelector(final QWidget parent, final List<ICourseType> courseTypes)
	{
		super(parent, getValues(courseTypes));
		this.courseTypes = courseTypes;
	}
	
	private static List<String> getValues(final List<ICourseType> courseTypes)
	{
		final List<String> result = new LinkedList<String>();
		for (final ICourseType type : courseTypes) {
			result.add(CourseListUtil.getText(type));
		}
		return result;
	}
	
	public List<ICourseType> getCourseTypes()
	{
		final List<ICourseType> result = new LinkedList<ICourseType>(); 
		final List<String> selectedItems = super.getSelectedItems();
		for (final String item : selectedItems) {
			final ICourseType type = CourseListUtil.valueOf(item, courseTypes);
			if (type != null) {
				result.add(type);
			}
		}
		
		return result;
	}

	public void setCourseTypes(final List<ICourseType> values) {
		final List<String> selectedItems = new LinkedList<String>();
		for (ICourseType value : values) {
			selectedItems.add(CourseListUtil.getText(value));
		}
		
		super.setSelectedItems(selectedItems);
	}

}
